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Finding the Fourth Proportional to 455,034.34, 627,976.74 and 261,504.28

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Solution

The fourth proportional to 455,034.34, 627,976.74 and 261,504.28 is: 360,892.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,034.34 : 627,976.74 = 261,504.28 : x
  2. Step 2: Convert to fraction form
    455,034.34/627,976.74 = 261,504.28/x
  3. Step 3: Cross multiply
    455,034.34x = 627,976.74 × 261,504.28
  4. Step 4: Simplify right side
    455,034.34x = 164,218,605,250.45
  5. Step 5: Solve for x
    x = 164,218,605,250.45/455,034.34
  6. Step 6: Final answer
    x = 360,892.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.